Thornton, CO
Heating & Cooling Services in Thornton, CO

Thornton's Neighborhood HVAC Company
K&G Builders HVAC is based in Thornton, so when a neighbor a few blocks away calls because the AC line is freezing up again, we can often get there quickly. A lot of our Thornton work starts exactly that way: one customer mentions us to the house next door.
Thornton has everything from older homes to new construction, and the systems vary just as much. Some older homes have crawl spaces and exposed piping that were never insulated, which costs you efficiency every season. Newer homes often have high-efficiency furnaces and ACs that need careful maintenance to stay that way. We work on all of it: furnaces, central air, heat pumps, and ductless mini-splits.
Every visit follows the same steps. We come to your home at a time that works for you, look at the system and the space it serves, and test before we guess. Then we walk you through what we found and give you options, priced on our tablet, before any work starts.
If your system is short-cycling, blowing warm air, or leaving the upstairs warmer than the thermostat setting, call us. The fix might be a capacitor, a clogged filter, or a refrigerant leak, and we’ll show you which.
What we do in Thornton
Heat or AC Out in Thornton?
Call (720) 701-3810 and tell us what’s happening. We’ll get someone to you as fast as we can.

What We Do in Thornton

AC Installation & Replacement

Furnace & Heating Installation

Heating & AC Repair

Mini-Splits & Ductless Systems

HVAC Maintenance & Tune-Ups

Emergency HVAC Service

Heat Pumps

Refrigerant, Vacuum & Leak Testing

Indoor Air Quality

Commercial HVAC & Refrigeration
Neighborhoods We Cover
Close By, and Straight With You

Recent HVAC Projects
What Our Customers Say
Serving Thornton From Nearby
Nearby Areas We Serve
Thornton HVAC Questions
Are you really based in Thornton?
Yes. K&G Builders HVAC is based in Thornton, CO.
How fast can you get to me in Thornton?
We usually respond the same day on service calls.
Do you work on older Thornton homes?
Yes, including homes with crawl spaces and older ductwork.
Do you install mini-splits in Thornton?
Yes, wall-mounted and ceiling units.
Do you serve businesses in Thornton?
Yes, including commercial maintenance and rooftop equipment.


